Using Any as a lower bound

[julbinb]

This isn't an issue per se, just curious (I am researching Julia subtyping, and we are looking into lower-bounds usages)...

DataValues.jl/src/array/constructors.jl

Line 78 in d568d25

function Base.convert(::Type{DataValueArray{T,N}}, A::AbstractArray{S,N}) where {S >: Any,T,N}

Is there a reason to use A::AbstractArray{S,N} with S >: Any instead of A::AbstractArray{Any,N}?
It seems that there shouldn't be any types distinct from Any that would be supertypes of Any.